Inventory (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2017	Sep. 30, 2016
Inventory [Line Items]
Inventory, Raw Materials, Gross		$ 1,204	$ 0	$ 1,204
Inventory, Work in Process, Gross		3,950	1,625	3,950
Inventory, Finished Goods, Gross		7,062	1,259	7,062
Inventory, Net	[1]	12,216	2,884	12,216
Deferred Costs and Other Assets		1,100	100	1,100
Inventory Write-down		$ 100	$ 300	$ 30	$ 0

[1] unaudited